Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

45 Cards in this Set

  • Front
  • Back
Most abundant glial cells that are star-shaped.
Arises from a cone-shaped region of the cell body and then narrows to form a slender process that stays uniform in diameter for the rest of its length.
Axon Collaterals
Branches of axon along its length. Extend from the axon at more or less right angles.
Axonal Terminals
Bulbous distal endings of the telodendria.
Short, tapering, diffusely branching extensions.
Ependymal Cells
Cells that range in shape from squamous to columnar, and many are ciliated.
Gray Matter
Gray area of the CNS; Contains cell bodies and unmyelinated fibers of neurons.
Group A fibers
Mostly somatic sensory and motor fibers serving the skin, skeletal muscles, and joints.
Group B and C fibers
Lightly myelinated fibers of intermediate diameter; have the smallest diameter and are unmyelinated.
Small ovoid cells with relatively long "thorny" processes.
Myelin Sheath
Whittish, fatty, segmented sheath of nerve fibers.
Nerve Fiber
Any long axon.
Bundles of intermediate filaments.
The supporting cells in the CNS.
Nissl Bodies
Rough ER that stains darkly with basic dyes and is obviously microscopically.
Nodes of Ranvier
Gaps in the sheath between Schwann cells.
Satellite Cells
Flat cells that surround neuron cell bodies within ganglia and play some role in controlling the chemical environment of neurons.
Schwann Cells
Surround and form myelin sheaths around the larger nerve fibers in the peripheral nervous system.
Unique junction that mediates the transfer of information from one neuron to the next or from a neuron to an effector cell.
Terminal branches.
White Matter
White substance of the central nervous system; myelinated nerve fibers.
The powerhouse of the human body.
Processes inputs received from the cerebral motor cortex, various brain stem nuclei, and sensory receptors to provide precise timing and appropriate patterns of skeletal muscle contraction.
Cerebral Cortex
Enables all qualities associated with consciousness.
Cerebrospinal Fluid
Forms a liquid cushion that gives buoyancy to the CNS organs.
Forms the central core of the forebrain and is surrounded by the cerebral hemispheres.
Caps the top of the brain stem and forms the inferolateral walls of the third ventricle.
Medulla Oblongata
The most inferior part of the brain stem.
Three connective tissue membranes that lie just external to the CNS organs.
Egg-shaped; Makes up 80% of the diencephalon and forms the superolateral walls of the third ventricle.
The Pons
Bulging brain stem region wedged between the midbrain and the medulla oblongata.
Receptors that respond to chemicals in solutions.
Receptors that are sensitive to stimuli arising outside the body.
Receptors that respond to stimuli arising from within the body.
Receptors that generate nerve impulses when they are deformed by mechanical forces.
Receptors that respond to potentially damaging stimuli that result in pain.
Receptors that respond to light energy.
Interpretation of the meaning of the stimulus.
Receptors that respond to internal stimuli, but there location is much more restricted.
Awareness of the stimulus.
Receptors that are sensitive to temperature changes.
ANS works primarily with smooth and cardiac muscles whereas the PNS works more with skeletal muscle.
Characteristics of the PNS and ANS?
3.Body Temperature
4.Regulation of Water Balance
5.Regulation of Food Intake
6.Sleep and Awake Pattern
7.Control of Endocrine System
7 Functions of the hypothalmus?
Sympathetic is most active in high-stress situations. Parasympathetic is most active in non-stressful situations.
Difference between sympathetic and parasympathetic?
The cerebral hemispheres and the structures of the diencephalon.